In the video, Brie is dressed in yellow while demonstrating a set of pull ups while her trainer films and hypes her up in the background. "Messing around with new grips, building grip strength," the caption reads. The video is so impressive that it even caught the attention of Reese Witherspoon, who pretty much summed up all of our thoughts with her comment saying, "Whoa." Watch Brie's full video above.